NOWAKOWSKA, W., R. GUBRYNOWICZ, and P. ŻARNECKI. “On the Model of Vocal Tract Dynamics”. Archives of Acoustics 18, no. 4 (December 31, 1993): 525–537. Accessed March 4, 2026. https://acoustics.ippt.gov.pl/index.php/aa/article/view/1161.